Barium titanate ceramic dielectric material

Abstract

The invention discloses a barium titanate ceramic dielectric material, consisting of a main crystal phase, a modified additive and a glass flux. In percentage by mol, the main crystal phase BaTiO3 accounts for 80 to 95 percent; the modified additive accounts for 0.7 to 19.5 percent; and the glass flux accounts for 1.21 to 9.1 percent. The invention has the advantages that the barium titanate ceramic dielectric material accords with X7R ceramic dielectric characteristics, and is good in environmental protection property, high in material dispersity and good in molding process; when the material is used for manufacturing MLCC products, and sintering temperature is low; and the barium titanate ceramic dielectric material is uniform in particle size distribution, uniform and compact in grain growth and free from or few in product detects.

Description

technical field

[0001] The invention relates to a barium titanate ceramic dielectric material, in particular to a barium titanate ceramic dielectric material which can be matched with a silver-rich electrode and used for MLCC manufacture. Background technique

[0002] In the field of material application, electronic ceramic materials have been widely used in multilayer chip ceramic capacitors (MLCC), resistors, inductors, microwaves, integrated circuit substrates, optoelectronic devices, LC, RC, L-C-R composite components, sensors, etc. in electronic components. MLCC has become one of the components that can best adapt to the rapid development of electronic technology by virtue of its unique advantages such as large specific volume, chip type, and high reliability. The progress of MLCC production technology always depends on the development of material system and corresponding process technology. At present, although some domestic manufacturers have very mature X7R environ...

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